67542545 has 16 divisors (see below), whose sum is σ = 93674880. Its totient is φ = 45792384.

The previous prime is 67542533. The next prime is 67542557. The reversal of 67542545 is 54524576.

It is an interprime number because it is at equal distance from previous prime (67542533) and next prime (67542557).

It is a cyclic number.

It is not a de Polignac number, because 67542545 - 2⁶ = 67542481 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67542499 and 67542508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7727 + ... + 13956.

It is an arithmetic number, because the mean of its divisors is an integer number (5854680).

Almost surely, 2^67542545 is an apocalyptic number.

It is an amenable number.

67542545 is a deficient number, since it is larger than the sum of its proper divisors (26132335).

67542545 is a wasteful number, since it uses less digits than its factorization.

67542545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21784.

The product of its digits is 168000, while the sum is 38.

The square root of 67542545 is about 8218.4271609597. The cubic root of 67542545 is about 407.2481688913.

The spelling of 67542545 in words is "sixty-seven million, five hundred forty-two thousand, five hundred forty-five".